GB869123A - Improvements in and relating to deflection systems for cathode ray tubes - Google Patents

Improvements in and relating to deflection systems for cathode ray tubes

Info

Publication number
GB869123A
GB869123A GB33090/57A GB3309057A GB869123A GB 869123 A GB869123 A GB 869123A GB 33090/57 A GB33090/57 A GB 33090/57A GB 3309057 A GB3309057 A GB 3309057A GB 869123 A GB869123 A GB 869123A
Authority
GB
United Kingdom
Prior art keywords
correction voltage
inductor
oct
resistor
relating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB33090/57A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Space Systems Loral LLC
Original Assignee
Philco Ford Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Philco Ford Corp filed Critical Philco Ford Corp
Publication of GB869123A publication Critical patent/GB869123A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
    • H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape
    • H03K4/90—Linearisation of ramp; Synchronisation of pulses
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
    • H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape
    • H03K4/10—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only
    • H03K4/26—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth current is produced through an inductor
    • H03K4/28—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth current is produced through an inductor using a tube operating as a switching device

Landscapes

  • Details Of Television Scanning (AREA)

Abstract

869,123. Sawtooth generating circuits. PHILCO CORPORATION. Oct. 23, 1957 [Oct. 31, 1956], No. 33090/57. Class 40(6) A cathode-ray tube deflection circuit comprises means for converting fly-back pulses into a correction voltage having non-linearity substantially complementary to that of the deflection current, the correction voltage being applied across a resistor in series with the damping diode. The Figure shows a horizontal deflection circuit in which linearity is improved by applying to the anode of the damping diode 12, a correcting voltage derived by integrating flyback pulses 19 appearing on an auxiliary winding 18 of the scanning transformer 11. The integrating circuit is formed by an inductor 20 and a resistor 21. Inductor 22 and capacitor 23 may be included to give further improvement by providing a complementary non-linear correction voltage. Ranges of component values are specified.
GB33090/57A 1956-10-31 1957-10-23 Improvements in and relating to deflection systems for cathode ray tubes Expired GB869123A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US619467A US2900565A (en) 1956-10-31 1956-10-31 Horizontal deflection system for cathode ray tubes

Publications (1)

Publication Number Publication Date
GB869123A true GB869123A (en) 1961-05-31

Family

ID=24482056

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33090/57A Expired GB869123A (en) 1956-10-31 1957-10-23 Improvements in and relating to deflection systems for cathode ray tubes

Country Status (2)

Country Link
US (1) US2900565A (en)
GB (1) GB869123A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1309997A (en) * 1970-10-31 1973-03-14 Fernseh Gmbh Deflection circuit
US3795835A (en) * 1972-09-08 1974-03-05 Gte Sylvania Inc Horizontal linearity correction circuit
US4334173A (en) * 1980-09-22 1982-06-08 Zenith Radio Corporation Horizontal width control circuit for image display apparatus
US4612481A (en) * 1984-06-27 1986-09-16 Cpt Corporation Linearity correction circuit
US5287043A (en) * 1988-03-31 1994-02-15 Brag Johan O Apparatus for automatically generating a correct CRT display regardless of timing signals

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2498007A (en) * 1947-06-14 1950-02-21 Rca Corp Electromagnetic deflection circuit for cathode-ray tubes
US2536839A (en) * 1949-05-24 1951-01-02 Rca Corp Power recovery cathode-ray beam deflection system
BE495848A (en) * 1949-05-24
US2784344A (en) * 1953-07-02 1957-03-05 Rca Corp Raster centering control
US2774911A (en) * 1954-02-08 1956-12-18 Int Standard Electric Corp Circuit arrangement for the generation of saw-tooth shaped deflecting currents

Also Published As

Publication number Publication date
US2900565A (en) 1959-08-18

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